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CN105051335A - Exhaust gas purification system - Google Patents

Exhaust gas purification system Download PDF

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Publication number
CN105051335A
CN105051335A CN201480018086.9A CN201480018086A CN105051335A CN 105051335 A CN105051335 A CN 105051335A CN 201480018086 A CN201480018086 A CN 201480018086A CN 105051335 A CN105051335 A CN 105051335A
Authority
CN
China
Prior art keywords
regeneration control
recovery
regeneration
mentioned
waste gas
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201480018086.9A
Other languages
Chinese (zh)
Other versions
CN105051335B (en
Inventor
盐见秀雄
福田智宏
太田笃嗣
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yanmar Power Technology Co Ltd
Original Assignee
Yanmar Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP2013072520A external-priority patent/JP6181400B2/en
Priority claimed from JP2013072521A external-priority patent/JP6008779B2/en
Application filed by Yanmar Co Ltd filed Critical Yanmar Co Ltd
Publication of CN105051335A publication Critical patent/CN105051335A/en
Application granted granted Critical
Publication of CN105051335B publication Critical patent/CN105051335B/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/021—Introducing corrections for particular conditions exterior to the engine
    • F02D41/0235—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus
    • F02D41/027—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus to purge or regenerate the exhaust gas treating apparatus
    • F02D41/029—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus to purge or regenerate the exhaust gas treating apparatus the exhaust gas treating apparatus being a particulate filter
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N9/00—Electrical control of exhaust gas treating apparatus
    • F01N9/002—Electrical control of exhaust gas treating apparatus of filter regeneration, e.g. detection of clogging
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
    • F01N3/023—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles
    • F01N3/0232—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles removing incombustible material from a particle filter, e.g. ash
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
    • F01N3/023—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles
    • F01N3/025—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles using fuel burner or by adding fuel to exhaust
    • F01N3/0253—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles using fuel burner or by adding fuel to exhaust adding fuel to exhaust gases
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/021—Introducing corrections for particular conditions exterior to the engine
    • F02D41/0235—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus
    • F02D41/024—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus to increase temperature of the exhaust gas treating apparatus
    • F02D41/0245—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus to increase temperature of the exhaust gas treating apparatus by increasing temperature of the exhaust gas leaving the engine
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/30—Controlling fuel injection
    • F02D41/38—Controlling fuel injection of the high pressure type
    • F02D41/3809—Common rail control systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/30—Controlling fuel injection
    • F02D41/38—Controlling fuel injection of the high pressure type
    • F02D41/40—Controlling fuel injection of the high pressure type with means for controlling injection timing or duration
    • F02D41/402—Multiple injections
    • F02D41/405—Multiple injections with post injections
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/009—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having two or more separate purifying devices arranged in series
    • F01N13/0097—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having two or more separate purifying devices arranged in series the purifying devices are arranged in a single housing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2430/00—Influencing exhaust purification, e.g. starting of catalytic reaction, filter regeneration, or the like, by controlling engine operating characteristics
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2590/00—Exhaust or silencing apparatus adapted to particular use, e.g. for military applications, airplanes, submarines
    • F01N2590/08—Exhaust or silencing apparatus adapted to particular use, e.g. for military applications, airplanes, submarines for heavy duty applications, e.g. trucks, buses, tractors, locomotives
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2610/00—Adding substances to exhaust gases
    • F01N2610/03—Adding substances to exhaust gases the substance being hydrocarbons, e.g. engine fuel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2900/00—Details of electrical control or of the monitoring of the exhaust gas treating apparatus
    • F01N2900/06—Parameters used for exhaust control or diagnosing
    • F01N2900/16—Parameters used for exhaust control or diagnosing said parameters being related to the exhaust apparatus, e.g. particulate filter or catalyst
    • F01N2900/1602—Temperature of exhaust gas apparatus
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2900/00—Details of electrical control or of the monitoring of the exhaust gas treating apparatus
    • F01N2900/06—Parameters used for exhaust control or diagnosing
    • F01N2900/16—Parameters used for exhaust control or diagnosing said parameters being related to the exhaust apparatus, e.g. particulate filter or catalyst
    • F01N2900/1606—Particle filter loading or soot amount
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
    • F01N3/033—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices
    • F01N3/035—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices with catalytic reactors, e.g. catalysed diesel particulate filters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
    • F01N3/22—Control of additional air supply only, e.g. using by-passes or variable air pump drives
    • F01N3/225—Electric control of additional air supply
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
    • F01N3/30—Arrangements for supply of additional air
    • F01N3/32—Arrangements for supply of additional air using air pump
    • F01N3/323—Electrically driven air pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2200/00—Input parameters for engine control
    • F02D2200/02—Input parameters for engine control the parameters being related to the engine
    • F02D2200/10—Parameters related to the engine output, e.g. engine torque or engine speed
    • F02D2200/101—Engine speed
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/40—Engine management systems

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Processes For Solid Components From Exhaust (AREA)
  • Chemical Kinetics & Catalysis (AREA)

Abstract

The present invention addresses the problem of enabling the combustion and removal of particulate matter in an exhaust gas purification device (202) without causing runaway combustion, even when there is an over-accumulation of particulate matter during regeneration of the exhaust gas purification device. An exhaust gas purification system is equipped with a common rail engine (201) and an exhaust gas purification device (202) arranged in the exhaust passage of the engine (201), and is configured so as to be capable of executing multiple regeneration controls for burning and removing particulate matter that has accumulated in the exhaust gas purification device (202). The multiple controls include at least a non-working regeneration control, wherein a post-injection (E) and a prescribed high rotational speed are combined to raise an exhaust gas temperature, and a recovery regeneration control, which can be executed when the non-working regeneration control fails. In the non-working regeneration control and the recovery regeneration control the engine (201) is driven primarily in order to burn and remove the particulate matter. The settings for the recovery regeneration control are such that a lower exhaust gas temperature than the non-working regeneration control and a longer duration than the non-working regeneration control are applied.

Description

Waste gas cleaning system
Technical field
The present invention relates to one and be configured in in-engine waste gas cleaning system, this motor is mounted in the Work machine that such as building machinery, farming machine and generator of engine are such.
Background technique
In the past, as the waste gas countermeasure of diesel engine (hereinafter referred to as motor), well-known discharge filter (diesel particulate filter) is set in the exhaust pathway of motor, thus the particulate material (PM) etc. in trap exhaust suppresses the technology (such as with reference to patent documentation 1 and 2 etc.) of discharging in air.When the PM trapped when utilizing discharge filter exceedes established amount, circulating resistance in discharge filter increases, cause motor to export to decline, so also proceed as follows: utilize the intensification of waste gas to be removed by the PM be deposited in discharge filter, make the PM trapping ability of discharge filter recover (regeneration).Even if make waste gas heat up, when discharge filter also regenerates deficiently, by being supplied in discharge filter by unburned fuel, PM being burnt, can promote that discharge filter regenerates.This technology resetting regeneration is also known.
Prior art document
Patent documentation
Patent documentation 1: Japanese Unexamined Patent Publication 2000-145430 publication
Patent documentation 2: Japanese Unexamined Patent Publication 2003-27922 publication
Summary of the invention
The problem that invention will solve
But if regenerate even if perform the replacement be supplied in discharge filter by unburned fuel, the operating condition that can not obtain sufficient thermogenic action still continues, then PM can excessively be stacked in discharge filter sometimes.When being exhausted the regeneration of filter in this condition, the burning ((Japanese: cruelly walk) out of control runaway combustion) sharply of the PM of excessive accumulation causes discharge filter that be full of cracks occurs or the such baneful influence of melting loss occurs.
For the scheme of dealing with problems
The technical problem that will solve of the present invention is, studies and provide a kind of waste gas cleaning system implementing improvement to above-mentioned such present situation.
The waste gas cleaning system of the invention of technological scheme 1 comprises common rail engine and is configured in the waste gas cleaning plant in the exhaust pathway of above-mentioned motor, can perform and the particulate material be deposited in above-mentioned waste gas cleaning plant be burnt and multiple Regeneration controls of removal, as above-mentioned multiple Regeneration control, at least there is the non-operation Regeneration control making exhaust gas temperature increase secondary rear injection and regulation high speed speed combination, with recovery (Japanese: the リ カ バ リ) Regeneration control that can perform when above-mentioned non-operation Regeneration control is failed, be set in above-mentioned non-operation Regeneration control and above-mentioned recovery Regeneration control, burning only in order to carry out above-mentioned particulate material is removed and makes above-mentioned engine-driving, in above-mentioned recovery Regeneration control, impose the exhaust gas temperature lower than above-mentioned non-operation Regeneration control and the time longer than above-mentioned non-operation Regeneration control.
The invention of technological scheme 2 is on the basis of the waste gas cleaning system described in technological scheme 1, in the kaput situation of above-mentioned non-operation Regeneration control, transfer to the recovery standby mode of the establishment waiting for the recovery jump condition preset, when above-mentioned recovery jump condition is false, carry out standby with above-mentioned recovery standby mode.
The invention of technological scheme 3, on the basis of the waste gas cleaning system described in technological scheme 2, in the process performing above-mentioned recovery Regeneration control, when the recovery condition subsequent preset is set up, interrupts above-mentioned recovery Regeneration control.
On the basis of the waste gas cleaning system of invention in technological scheme 1 ~ 3 described in any one of technological scheme 4, when completing above-mentioned recovery Regeneration control, get back to the control that usually operates.
The invention of technological scheme 5 is on the basis of the waste gas cleaning system described in technological scheme 1, as above-mentioned multiple Regeneration control, at least have: the replacement Regeneration control making exhaust gas temperature increase is sprayed in use time afterwards, the non-operation Regeneration control making exhaust gas temperature increase secondary rear injection and regulation high speed speed combination, and the recovery Regeneration control that can perform when above-mentioned non-operation Regeneration control failure, be set in above-mentioned non-operation Regeneration control and above-mentioned recovery Regeneration control, burning only in order to carry out above-mentioned particulate material is removed and above-mentioned motor is driven, shift to above-mentioned recovery Regeneration control from above-mentioned replacement Regeneration control via above-mentioned non-operation Regeneration control, when from above-mentioned replacement Regeneration control to above-mentioned non-operation Regeneration control transfer, the non-operation standby mode of the establishment of the non-operation jump condition preset via wait, when from above-mentioned non-operation Regeneration control to above-mentioned recovery Regeneration control transfer, the recovery standby mode of the establishment of the recovery jump condition preset via wait, when above-mentioned each jump condition is false, carry out standby with above-mentioned each standby mode.
The invention of technological scheme 6 on the basis of the waste gas cleaning system described in technological scheme 5, in above-mentioned non-operation Regeneration control, maximum output when the export-restriction of above-mentioned motor being become non-operation lower than maximum output.
The invention of technological scheme 7 on the basis of the waste gas cleaning system described in technological scheme 5 or 6, in above-mentioned recovery Regeneration control, maximum output when the export-restriction of above-mentioned motor being become recovery lower than output maximum during above-mentioned non-operation.
Invention effect
Adopt the invention of technological scheme 1, waste gas cleaning system comprises common rail engine and is configured in the waste gas cleaning plant in the exhaust pathway of above-mentioned motor, can perform and the particulate material be deposited in above-mentioned waste gas cleaning plant be burnt and multiple Regeneration controls of removal, as above-mentioned multiple Regeneration control, at least there is the non-operation Regeneration control making exhaust gas temperature increase secondary rear injection and regulation high speed speed combination, with the recovery Regeneration control that can perform when above-mentioned non-operation Regeneration control is failed, be set in above-mentioned non-operation Regeneration control and above-mentioned recovery Regeneration control, burning only in order to carry out above-mentioned particulate material is removed and above-mentioned motor is driven, in above-mentioned recovery Regeneration control, impose the exhaust gas temperature lower than above-mentioned non-operation Regeneration control and the time longer than above-mentioned non-operation Regeneration control, even if so above-mentioned particulate material is excessively piled up in above-mentioned waste gas cleaning plant, above-mentioned particulate material is made while runaway combustion also can not occur to burn and remove.Thus, the breakage of above-mentioned waste gas cleaning plant (melting loss), excessive pollution discharge can be prevented.
Adopt the invention of technological scheme 2, the invention of technological scheme 3, after temporarily transferring to above-mentioned recovery standby mode, only transfer to above-mentioned recovery Regeneration control or above-mentioned recovery standby mode subsequently.Therefore, the such Regeneration control causing runaway combustion can not be performed, the generation of runaway combustion can be prevented.
Adopt the invention of technological scheme 4, owing to turning back to when completing above-mentioned recovery Regeneration control controls that usually operates, so operator need not carry out such as pattern switching return operation etc., can trouble be saved, alleviate the operation burden of operator.
Adopt the invention of technological scheme 5, as above-mentioned multiple Regeneration control, at least there is use time and spray the replacement Regeneration control making exhaust gas temperature increase afterwards, the non-operation Regeneration control making exhaust gas temperature increase secondary rear injection and regulation high speed speed combination, and the recovery Regeneration control that can perform when above-mentioned non-operation Regeneration control failure, in above-mentioned non-operation Regeneration control and above-mentioned recovery Regeneration control, burning only in order to carry out above-mentioned particulate material is removed and above-mentioned motor is driven, so in above-mentioned non-operation Regeneration control and above-mentioned recovery Regeneration control, above-mentioned motor does not operate usually.That is, above-mentioned non-operation Regeneration control and above-mentioned recovery Regeneration control as preventing the breakage of above-mentioned waste gas cleaning plant (melting loss), excessive pollution discharges pattern that such crisis avoids and exists.
And, be set to from above-mentioned replacement Regeneration control and transfer to above-mentioned recovery Regeneration control through above-mentioned non-operation Regeneration control, when transferring to above-mentioned non-operation Regeneration control from above-mentioned replacement Regeneration control, via waiting for the non-operation standby mode that the non-operation jump condition preset is set up, when transferring to above-mentioned recovery Regeneration control from above-mentioned non-operation Regeneration control, via waiting for the recovery standby mode that the recovery jump condition preset is set up, when above-mentioned each jump condition is false, carry out standby with above-mentioned each standby mode, so after temporarily transferring to above-mentioned each standby mode, only transfer to above-mentioned non-operation Regeneration control or above-mentioned recovery Regeneration control.Therefore, can not perform and cause such Regeneration control of runaway combustion, the generation of runaway combustion can be prevented, reliably carry out preventing the breakage of above-mentioned waste gas cleaning plant (melting loss), excessive pollution discharges such crisis and avoid.
Adopt the invention of technological scheme 6, the invention of technological scheme 7, in above-mentioned non-operation Regeneration control, maximum output when the export-restriction of above-mentioned motor being become non-operation lower than maximum output, in above-mentioned recovery Regeneration control, maximum output when the export-restriction of above-mentioned motor being become recovery lower than output maximum during above-mentioned non-operation, so performing above-mentioned non-operation Regeneration control, when above-mentioned recovery Regeneration control, excessive intensification and the boosting of waste gas can be prevented, suppress the deterioration of the exhaust system part of the above-mentioned waste gas cleaning plant caused by heating up etc., the generation of the waste gas leakage at the joining portion from above-mentioned exhaust system part of being caused by boosting.
Accompanying drawing explanation
Fig. 1 is the stereogram observing motor obliquely from the front.
Fig. 2 is the plan view of motor.
Fig. 3 is the rear view of motor.
Fig. 4 is the plan view of motor.
Fig. 5 is the right elevation of motor.
Fig. 6 is the left view of motor.
Fig. 7 is the stereoscopic figure observing discharge filter from purification inlet duct side.
Fig. 8 is the stereoscopic figure observing discharge filter from purge outlet pipe side.
Fig. 9 be discharge filter analyse and observe explanatory drawing.
Figure 10 is the fuel system explanatory drawing of motor.
Figure 11 is the figure of the injection timing that fuel is described.
Figure 12 is the explanatory drawing of metrical instrument panel.
Figure 13 is the explanatory drawing that output characteristics maps.
Figure 14 is the flow chart that assisted Regeneration controlled and reset Regeneration control.
Figure 15 is the flow chart of non-operation Regeneration control.
Figure 16 is the flow chart recovering Regeneration control.
Figure 17 is the flow chart of the non-operation Regeneration control of allowing under (Japanese: ア ロ ー) pattern.
Figure 18 is that the assisted Regeneration eliminated in another example of regenerative switch controls and resets the flow chart of Regeneration control.
Figure 19 is the flow chart of the non-operation Regeneration control eliminated in another example of regenerative switch.
Figure 20 is the flow chart of the recovery Regeneration control eliminated in another example of regenerative switch.
Figure 21 is the flow chart of allowing the non-operation Regeneration control under pattern eliminated in another example of regenerative switch.
Embodiment
Below, based on accompanying drawing, mode of execution of specific embodiments of the invention is described.
(1) summary of motor
First, the summary of the motor 201 of joint-track type is described with reference to Fig. 1 ~ Fig. 6.In addition, in the following description, before and after the both sides (clipping the sidepiece of the both sides of crankshaft center line) parallel with crankshaft center line are called, the side being configured with cooling fan 209 is called right side, the side being configured with flywheel casing 210 is called left side, the side being configured with gas exhaust manifold 7 is called front side, the side being configured with intake manifold 6 is called rear side, for convenience of description, above-mentioned orientation is regarded as the four directions of motor 201 and the benchmark of upper and lower position relationship.
As shown in Fig. 1 ~ Fig. 6, as the motor 201 of the prime mover be mounted in the Work machine of farm machinery, building building machinery etc., there is waste gas cleaning plant and the discharge filter 202 (diesel particulate filter) of continuous regenerative.Utilize discharge filter 202 to be removed by the particulate material (PM) in the waste gas of discharging from motor 201, and reduce carbon monoxide (CO), the hydrocarbon (HC) in waste gas.
Motor 201 has the cylinder body 204 being built-in with engine output shaft and bent axle 203 and piston (omitting diagram).Cylinder body 204 is equipped with cylinder cap 205.Be configured with intake manifold 206 at the rear side surface of cylinder cap 205, be configured with gas exhaust manifold 207 at the front side surface of cylinder cap 205.The upper surface side of cylinder cap 205 is covered by valve mechanism cover 208.The left and right both end sides of bent axle 203 is given prominence to from the left and right sides of cylinder body 204.The right lateral surface side of motor 201 is provided with cooling fan 209.Rotating power is delivered to cooling fan 209 from the side, left side of bent axle 203 via cooling fan V-belt 222.
The back-surface side of motor 201 is provided with flywheel casing 210.The state being supported on the rear end side of bent axle 203 in flywheel casing 210 with axle contains flywheel 211.The rotating power of motor 201 is delivered to the working part of Work machine via flywheel 211 from bent axle 203.The food tray 212 stockpiling lubricant oil is configured with at the lower surface of cylinder body 204.Lubricant oil in food tray 212 is supplied to each lubrication portion of motor 201 via the oil strainer 213 etc. of the rear side surface being configured in cylinder body 204, turns back to subsequently in food tray 212.
Above the oil strainer 213 of the rear side surface of cylinder body 204, (below of intake manifold 206) is provided with fuel feed pump 214.In addition, motor 201 has the sparger 215 of four cylinder amounts, and the sparger 215 of this four cylinders amount has the Fuelinjection nozzle 219 (with reference to Figure 10) of electromagnetism open and close controlling type.The position be positioned at below intake manifold 206 in the rear side surface of cylinder body 204 is provided with common-rail system 220, this common-rail system 220 in a burn cycle by fuel multi-stage jet in each cylinder of motor 201.Each sparger 215 is connected with the fuel tank 218 be mounted in Work machine by fuel feed pump 214, common-rail system 220 and fuel filter 217.The fuel of fuel tank 218 is pressed and delivered to common-rail system 220 from fuel feed pump 214 via fuel filter 217.By carrying out open and close controlling to the Fuelinjection nozzle 219 of each sparger 215, the fuel of the high pressure be accumulated in common-rail system 220 is ejected in each cylinder of motor 201 from each sparger 215.
The cooling waterpump 221 of cooling water lubrication is configured with in the left-hand face side of cylinder body 204 and the fan shaft coaxial of cooling fan 209.The rotating power of bent axle 203 is utilized to drive cooling fan 209 and cooling waterpump 221 in the lump by cooling fan V-belt 222.By driving cooling waterpump 221, the cooling water in the radiator be mounted in Work machine (omitting diagram) is supplied in cylinder body 204 and cylinder cap 205, cooled engine 201.The cooling water of the cooling of motor 201 has been helped to turn back to radiator.In addition, alternator 223 is configured with in the left side of cooling waterpump 221.
Power stand leg assembly department 224 is respectively arranged with at the front and back side surface of cylinder body 204.Be connected with the power stand leg body (omitting diagram) with vibration isolation rubber respectively with bolt at each power stand leg assembly department 224.Motor 201 by each power stand leg body isolated supporting in Work machine (being specifically motor installation chassis).
As shown in Figures 2 and 4, the entrance part of intake manifold 206 is connected by EGR device 226 (Exhaust gas recirculation device) and air-strainer (omit and illustrate).Be inhaled into new air (outside air) in air-strainer after by this air-strainer dedusting and purification, be transported in intake manifold 206 via EGR device 226, be fed in each cylinder of motor 201.
EGR device 226 comprises EGR body shell 227, throttle component 228, EGR gas pipe 230 and EGR valve component 231, above-mentioned EGR body shell 227 makes a part for the waste gas of motor 201 (the EGR gas from gas exhaust manifold 207) and new air (outside air from air-strainer) mix and be supplied in intake manifold 206, above-mentioned throttle component 228 makes EGR body shell 227 be connected with air-strainer, above-mentioned EGR gas pipe 230 is connected with gas exhaust manifold 207 by cooler for recycled exhaust gas 229, above-mentioned EGR valve component 231 makes EGR body shell 227 be connected with EGR gas pipe 230.
Throttle component 228 is connected by EGR body shell 227 and intake manifold 206.Throttle component 228 is connected with an end bolt of the length direction of EGR body shell 227.The left and right open end inwards of EGR body shell 227 is connected with bolt with the entrance part of intake manifold 206.The outlet side of EGR gas pipe 230 is connected by EGR valve component 231 and EGR body shell 227.The inlet side of EGR gas pipe 230 is connected by the lower face side of cooler for recycled exhaust gas 229 with gas exhaust manifold 207.By regulating the aperture of EGR valve component 231, regulate the EGR gas delivery volume to EGR body shell 227.
In such a configuration, via throttle component 228, new air (outside air) is supplied in EGR body shell 227 from air-strainer, and via EGR valve component 231, EGR gas (part from the waste gas that gas exhaust manifold 207 is discharged) is supplied in EGR body shell 227 from gas exhaust manifold 207.After the new air from air-strainer and the EGR gas from gas exhaust manifold 207 mix in EGR body shell 227, the mixed gas in EGR body shell 227 is supplied in intake manifold 206.Like this, by making a part for the waste gas of discharging from gas exhaust manifold 207 be back to motor 201 via intake manifold 206, maximum combustion temperature during high loaded process being declined, reduces the discharge capacity of the NOx (nitrogen oxide) from motor 201.
As shown in Fig. 1 ~ Fig. 5, be configured with turbosupercharger 232 on the right side of cylinder cap 205 above gas exhaust manifold 207.Turbosupercharger 232 comprises the turbine shroud 233 being built-in with turbo wheel (Japanese: タ ー PVC Application ホ イ Le) (omitting diagram) and the compressor housing 234 being built-in with propeller cavitation impeller (Japanese: Block ロ ア ホ イ Le) (omitting diagram).The exhaust entrance side of turbine shroud 233 is connected with the export department of gas exhaust manifold 207.The exhaust outlet side of turbine shroud 233 is connected by discharge filter 202 and tail pipe (omit and illustrate).The turbine shroud 233 and discharge filter 202 etc. of the waste gas gas exhaust manifold 207 via turbosupercharger 232 is discharged to from tailpipe to outside from each cylinder of motor 201.
The air inlet side of compressor housing 234 is connected by suction tude 235 and air-strainer.The gas entry outlet side of compressor housing 234 is connected by pressure inlet 236 and throttle component 228.Be transported in intake manifold 206 via throttle component 228 and EGR body shell 227 from compressor housing 234 by the new air after air-strainer dedusting, be supplied in each cylinder of motor 201.Suction tude 235 is connected by gas blowby recurrent canal 237 and the ventilation chamber in valve mechanism cover 208.Utilize ventilation chamber to be separated the blow-by gas eliminating lubricant oil to turn back in suction tude 235 through gas blowby recurrent canal 237, be back in intake manifold 206 and be again supplied in each cylinder of motor 201.
(2) structure of discharge filter
Next, the structure of discharge filter 202 is described with reference to Fig. 7 ~ Fig. 9.Discharge filter 202 has the purification housing 240 be made up of heating resisting metal material, and this purification housing 240 has purification inlet duct 241 and purge outlet pipe 242.In series contain side by side along the movement direction (direction of arrow with reference to Fig. 9) of waste gas in the inside of purification housing 240 and generate nitrogen dioxide (NO 2) platinum etc. diesel oxidation catalyst 243 and by the particulate material (PM) that traps with the soot filter 244 of the lower temperature ojosa of oxidation removal continuously.Distribute in the length direction both sides (end side and another side) of purification housing 240 and be provided with purification inlet duct 241 and purge outlet pipe 242.Purification inlet duct 241 is connected with the exhaust outlet side of turbine shroud 233.Purge outlet pipe 242 and tail pipe (omit and illustrate) are connected.
In such a configuration, the waste gas of motor 201 flow in purification housing 240 from the exhaust outlet side of turbine shroud 233 via purification inlet duct 241, is cleaned process successively by diesel oxidation catalyst 243 and soot filter 244.Particulate material in waste gas through the partition wall of the Porous between each cell in soot filter 244, can not become trapped in.Subsequently, the waste gas that have passed diesel oxidation catalyst 243 and soot filter 244 is released towards tail pipe.
When waste gas is by diesel oxidation catalyst 243 and soot filter 244, if exhaust gas temperature exceedes the temperature (such as about 300 DEG C) that can regenerate, then the effect of diesel oxidation catalyst 243 is utilized the nitrous oxide (NO) in waste gas to be oxidized to unstable nitrogen dioxide (NO 2).And, the oxygen (O) of releasing when nitrogen dioxide becomes nitrous oxide again will be deposited in the particulate material oxidation removal in soot filter 244, thus the particulate material trapping ability of soot filter 244 is recovered (soot filter 244 is from regeneration).In addition, in embodiments, another side of length direction of purification housing 240 is configured to silencing apparatus 245, and this silencing apparatus 245 is provided with purge outlet pipe 242.
Inlet side lid 254 is welded with in the end side (end of exhaust-gas upstream side) of inlet side housing 247.Inlet side lid 254 is utilized the end side of inlet side housing 247 to be closed.Purification inlet duct 241 is welded with at the outer circumferential side of inlet side housing 247.Purification inlet duct 241 is connected with in inlet side housing 247 by the exhaust gas entrance 255 being formed at inlet side housing 247.In addition, inlet side housing 246 and outlet side housing 247 utilize many group thick plate-like body flanges 271 to be detachably connected with Duo Gen bolt 272.
The silencing apparatus 45 being positioned at another side of length direction of purification housing 240 has noise elimination housing 251.The end side (end of exhaust-gas upstream side) of noise elimination housing 251 is connected with outlet side housing 247.Outlet side lid 265 is welded with in another side (end in exhaust downstream side) of noise elimination housing 251.The purge outlet pipe 242 with many communicating exhaust gas holes is provided with at noise elimination housing 251.The outstanding side of purge outlet pipe 42 is such as connected with tail pipe, existing noise elimination component.In addition, outlet side housing 247 and noise elimination housing 251 utilize many group thick plate-like body flanges 273 to be detachably connected with Duo Gen bolt 274.
Be provided with the link leg body 277 that can load and unload at least one of thick plate-like body flange 273, purification housing 240 is supported on motor 201 by this link leg body 277.Be installed with Convenient table body 279 at the outer circumferential side of purification housing 240 (being inlet side housing 247 in embodiments) by welding, purification housing 240 is supported on motor 201 by this Convenient table body 279.Link leg body 277 and Convenient table body 279 are connected with bolt with the housing assembly department 280 of the upper surface side being formed in flywheel casing 210.That is, discharge filter 202 utilizes and links leg body 277 and Convenient table body 279 and stably link on the flywheel casing 210 that is bearing in as high rigid member.
As shown in Figures 7 and 8, comprise at the outer circumferential side of purification housing 240: the electric wiring connector 294 detecting the differential pressure transducer 281 of the exhaust gas pressure in purification housing 240 and the dpf temperature sensor 282 of the same exhaust gas temperature detected in purification housing 240.The pressure difference of differential pressure transducer 281 to the waste gas clipped between the exhaust-gas upstream side of soot filter 244 and exhaust downstream side detects, and uses the PM accumulating amount of this pressure difference conversion soot filter 44, infers the blocked state in discharge filter 202.By controlling the work of throttle component 228, common rail 216 based on the scaling results of PM accumulating amount, carry out the Regeneration control of soot filter 244 (discharge filter 202).
The sensor stand 283 that can load and unload is installed, the electric wiring connector 294 of this sensor stand 283 support pressure gap sensor 281 and dpf temperature sensor 282 at least one of thick plate-like body flange 273.Sensor stand 283 is set side by side with the electric wiring connector 294 of differential pressure transducer 281 and dpf temperature sensor 282.The end side of upstream sensor pipe arrangement 288 and downstream sensor pipe arrangement 289 is connected with pressure difference transducer 281 respectively.On purification housing 240, the pressure sleeve body 292 of a pair is provided with the such position relationship clipping soot filter 244.Each pressure axis hole edge 292 is connected to corresponding sensor pipe arrangement 288,289.The electric wiring connector 294 of exhaust gas temperature sensor 282 is multiple, and sensor pipe arrangement 295 is extended out from each electric wiring connector.The temperature axis hole edge 298 being arranged at purification housing 240 is connected to corresponding sensor pipe arrangement 295.
(3) outline of common-rail system
Next, with reference to Figure 10 and Figure 11, the outline as the common-rail system 220 of fuel injection system is described.Fuel tank 218 is connected with each sparger 215 of four cylinder amounts in motor 201 by common-rail system 220 and fuel feed pump 214.As mentioned above, each sparger 215 has the Fuelinjection nozzle 219 of electromagnetism open and close controlling type.Common-rail system 220 has cylindric common rail 216 (pressure accumulating chamber).The suction side of fuel feed pump 214 is connected with fuel tank 218 by fuel filter 217 and low-voltage tube 261.Fuel in fuel tank 218 is inhaled in fuel feed pump 216 via fuel filter 217 and low-voltage tube 261.Common rail 216 is connected by the discharge side of high-voltage tube 262 with fuel feed pump 216.The sparger 215 of four cylinder amounts is connected with common rail 216 by 4 fuel injection pipes 263.
Fuel feed pump 214 is connected with fuel tank 218 by fuel return pipe 264.The end side of common rail recurrent canal 267 is connected with the end of the length direction of common rail 216 by the recurrent canal connector 266 limited the pressure of the fuel in common rail 216.Another side of common rail recurrent canal 267 is connected (collaborating with fuel return pipe 264) by fuel return pipe 264 with fuel tank 218.The residual fuel of fuel feed pump 214 and the residual fuel of common rail 216 are reclaimed by fuel tank 218 via fuel return pipe 264 and common rail recurrent canal 267.
In such a configuration, the fuel of fuel tank 218 is pressed and delivered to common rail 216 by fuel feed pump 214, as the fuel deposition of high pressure in common rail 216.By carrying out open and close controlling (electronic control) to each Fuelinjection nozzle 219 respectively, the fuel of the high pressure in common rail 216, being controlled accurately on the basis of jet pressure, time for spraying and injection period (emitted dose), is ejected into each cylinder of motor 201 from each sparger 115.Therefore, it is possible to reduce the nitrogen oxide (NOx) of discharging from motor 201, and the noise and vibration of motor 201 can be reduced.
As shown in figure 11, common-rail system 220 be configured to clip upper dead center (TDC) near execution main injection A.In addition, common-rail system 220 is configured to except performing main injection A, in the timing of the crank angle θ 1 of the precontract 60 ° of upper dead center, a small amount of pilot injection B is performed with NOx and being reduced to object of noise, or be about to the timing of the crank angle θ 2 arriving upper dead center, pre-spray C is performed with being reduced to object of noise, or in the crank angle θ 3 of after top dead center and the timing of θ 4, for the purpose of the promotion of the purification of the minimizing of particulate material (hereinafter referred to as PM), waste gas perform after spray D and secondary after spray E.
The timing that pilot injection B is significantly shifting to an earlier date than main injection A is sprayed, thus promotes mixing of fuel and air.Pre-spray C sprayed before main injection A, thus shortened the delayed of the ignition timing of main injection A.Rear injection D sprays slightly more delayedly than main injection A, thus makes diffusive combustion activate, makes the temperature from the waste gas of motor 201 rise (PM is rekindled).Secondary rear injection E sprays in the timing significantly more delayed than main injection A, thus does not help actual combustion process, is supplied in discharge filter 202 as unburned fuel.The unburned fuel be fed in discharge filter 202 reacts on diesel oxidation catalyst 243, utilizes this reaction heat to make the exhaust gas temperature in discharge filter 202 increase.At this, the height of the chevron of the coordinate diagram in Figure 11 embodies the difference of the fuel injection amount in each injection phase A ~ E roughly.
(4) relevant to the control of motor structure
Next, with reference to Figure 10 ~ Figure 13, the structure relevant to the control of motor 201 is described.As shown in Figure 10, the Fuelinjection nozzle 219 with each cylinder made in motor 201 carries out the ECU311 of work.Although detailed, but ECU311 is except performing the CPU of various calculation process, control, also have store various data in advance regularly ROM, ground storage control program, the EEPROM of various data, temporarily storage control program, the RAM of various data, the timer of time measurement and input/output interface etc. can be rewritten, ECU311 is configured near motor 201 or motor 201.
ECU311 is connected with storage battery 332 by the key operation 331 that power supply is additional.Key operation 331 is the rotary switches that the key of the regulation be inserted in keyhole can be utilized to turn to these 3 terminal positions of off-position, link position and enable position.Key operation 331 is configured on metrical instrument panel 340, and this metrical instrument panel 340 is arranged at the Work machine (with reference to Figure 12) that motor 201 carries object.The link position of key operation 331 (terminal) is connected with the input side of ECU311.
The rail pressure sensor 312 of the fuel pressure detected in common rail 216 is at least connected with at the input side of ECU311, the magnetic clutch 313 petrolift 214 being rotated or stops, detect the engine rotation sensor 314 of the rotating speed (camshaft location of bent axle 203) of motor 201, detect and set the injection setting device 315 of the number of fuel injections (number of times in the fuel injection period of a stroke) of sparger 215, detect the throttle position sensor 316 of the operating position accelerating operation tool (omitting diagram), detect the intake air temperature sensor 317 of the intake temperature in air inlet path, detect the exhaust gas temperature sensor 318 of the exhaust gas temperature in exhaust pathway, detect the cooling water temperature sensor 319 of the cooling water temperature of motor 201, detect the fuel temperature sensor 320 of the fuel temperature in common rail 216, detect the EGR temperature transducer 321 of the temperature of EGR gas, detect the pressure pressure sensor 281 of the pressure difference of the waste gas of (upstream and downstream) before and after the soot filter 244 in discharge filter 202, detect the dpf temperature sensor 282 of the exhaust gas temperature in discharge filter 202, the regenerative switch 322 of component is permitted in regeneration as the regeneration actions of license discharge filter 202, as forbidding that the regeneration disable switch 323 of component is forbidden in the regeneration of discharge filter 202 regeneration actions, and forbid the interlock switch 324 of execution of each Regeneration control that non-operation Regeneration control (referring to aftermentioned) is later in the locked state.
The o of each Fuelinjection nozzle 219 of four cylinder amounts is at least connected at the outlet side of ECU311.Namely, be configured to while control the fueling injection pressure of the fuel under high pressure be accumulated in common rail 216, injection timing and injection period etc., while spray above-mentioned fuel under high pressure from Fuelinjection nozzle 219 several times in a stroke, thus perform nitrogen oxide (NOx) obtain suppression, and coal smoke, carbon dioxide (CO 2) etc. the perfect combustion that is also reduced of generation, reduce oil consumption.
In addition, the throttle component 228 of the air inlet pressure (air inflow) regulating motor 201 is connected with at the outlet side of ECU311, regulate the EGR valve component 231 to the EGR gas delivery volume of intake manifold 206, the motor warning light 325 of the exception of notice motor 201, notice waste gas is the exhaust temperature alert lamp 326 of high temperature, the regeneration requirements lamp 327 of the execution of the Regeneration control of urging non-operation Regeneration control later, with the regeneration lamp 328 of the regeneration actions of discharge filter 202 light on and off relatively, lamp 329 is forbidden in the regeneration utilizing the quiescing of regeneration disable switch 323 to carry out work, and the alarm buzzer 330 to ring relatively with the regeneration actions etc. of discharge filter 202.Move relevant data in advance be stored in the EEPROM of ECU311 to the light on and off of various lamp 325 ~ lamp 329, the ring of alarm buzzer 330.In addition, as shown in figure 12, regenerative switch 322, regeneration disable switch 323 and various lamp 325 ~ 329 are configured on the metrical instrument panel 340 of the Work machine of the lift-launch object being arranged in motor 201.Interlock switch 324 is configured near metrical instrument panel 340 or metrical instrument panel 340.
As shown in figure 12, regenerative switch 322 and regeneration disable switch 323 are configured to the rocker switch 333 (seesaw switch) that can rotate around the supporting axle being positioned at central part.Rocker switch 333 is regenerative switch 322 a side of supporting axle, is regeneration disable switch 323 the opposing party of supporting axle.
Regenerative switch 322 is switches of snap action type.That is, regenerative switch 322 is by by the push-button switch sending the not interlocking type of an ON pulse signal next time.By the time of pressing of the regenerative switch 322 undertaken by operator as one of benchmark that could perform distinguishing each Regeneration control that replacement Regeneration control (referring to aftermentioned) is later.
Regeneration disable switch 323 is switches of alternating movement type.That is, regenerating disable switch 323 is when by time next time, locks depressed position at this, then by time next time, returns to the push-button switch of the locking shape of original position.When pressing regeneration disable switch 323 and locking, maintain the drive condition of the present situation in motor 201, the execution resetting the later each Regeneration control of Regeneration control is prohibited.It is also one of benchmark that could perform distinguishing each Regeneration control that replacement Regeneration control is later that the connection of regeneration disable switch 323 disconnects.
Regeneration lamp 328 is built-in with in the regenerative switch 322 of mode of execution.That is, regenerative switch 322 part of rocker switch 333 is configured to the switch being with regeneration lamp 328.In addition, in the regeneration disable switch 323 of mode of execution, be built-in with regeneration equally forbid lamp 329, regeneration disable switch 323 part of rocker switch 333 is configured to be with regeneration to forbid the switch of lamp 329.In addition, in the characteristic of the structure of rocker switch 333, connect to make regeneration disable switch 323 if press regeneration disable switch 323, then regenerative switch 322 disconnects.As long as regeneration disable switch 323 is lock state, then regenerative switch 322 can not connect.As long as regeneration disable switch 323 is relieving state, then can presses regenerative switch 322 and connect to make regenerative switch 322.
Be previously stored with in the EEPROM of ECU311 and represent that the output characteristics of the rotating speed N of motor 201 and the relation of torque T (load) maps M (with reference to Figure 13).In addition, although detailed, be also previously stored with in the EEPROM of ECU311: map with the exhaust gas flow of the relation conversion exhaust gas flow of fuel injection amount according to the rotating speed N of motor 201, the PM discharge capacity of the PM discharge capacity of the relation conversion motor 201 of the same rotating speed N according to motor 201 and fuel injection amount maps.The experiment etc. that is respectively mapping through that output characteristics maps M etc. is obtained.Map in M in the output characteristics shown in Figure 13, transverse axis represents rotating speed N, and the longitudinal axis represents torque T.It is region with to protrude the solid line Tmx that draws upward and fence up that output characteristics maps M.Solid line Tmx is the peak torque line of the peak torque represented relative to each rotating speed N.In this case, as long as the pattern of motor 201 is identical, then the output characteristics be stored in ECU311 maps M all identical (sharing).As shown in figure 13, output characteristics maps boundary line BL1, BL2 that M is expressed the relation of rotating speed N under the exhaust gas temperature of regulation and torque T and is divided into upper and lower three parts.
Than the region of the 1st top side of boundary line BL1 be only utilize the usual running of motor 201 just can by the PM oxidation removal (oxidation of diesel oxidation catalyst 243 plays a role) that is deposited on soot filter 244 from regeneration zone.Region between 1st boundary line BL1 and the 2nd boundary line BL2 only utilizes the usual running of motor 201 not by PM oxidation removal, PM is deposited on soot filter 244, but utilizes assisted Regeneration described later to control, reset the renewable region that the execution of Regeneration control makes discharge filter 202 regenerate.Even if be perform assisted Regeneration to control, reset Regeneration control, the non-renewable region that discharge filter 202 also can not regenerate than the 2nd boundary line BL2 region on the lower.Because the exhaust gas temperature of the motor 201 in non-renewable region is too low, even if so perform assisted Regeneration control from this state, reset Regeneration control, exhaust gas temperature also can not rise to regeneration boundary temperature.That is, as long as the relation of the rotating speed N of motor 201 and torque T is in non-renewable region, then under assisted Regeneration control, resetting Regeneration control, discharge filter 202 can not regenerate (the particulate material trapping ability of soot filter 244 is not recovered).In addition, the exhaust gas temperature on the 1st boundary line BL1 to carry out the regeneration boundary temperature (about about 300 DEG C) from regeneration.
ECU311 obtains the torque of motor 201 substantially according to the rotating speed detected by engine rotation sensor 314 and the throttle position detected by throttle position sensor 316, use torque and output characteristics computing target fuel injection amount, perform the fuel injection control that common-rail system 220 is worked based on this operation result.In addition, mainly through regulate each Fuelinjection nozzle 219 valve opening during, change the injection period to each sparger 215, regulate the fuel injection amount of common-rail system 220.
As the control mode (Regeneration control mode) of motor 201, the usual running having the usual running only utilizing motor 201 that discharge filter 202 is spontaneously regenerated controls (from Regeneration control), the assisted Regeneration making exhaust gas temperature automatically increase when the blocked state of discharge filter 202 reaches more than regulation level controls, use time rear replacement Regeneration control spraying E and make exhaust gas temperature increase, the non-operation Regeneration control that the secondary rear regulation high speed speed combination spraying E and motor 201 makes exhaust gas temperature rise (also can be called urgent Regeneration control, parking Regeneration control), and the recovery Regeneration control that can perform when non-operation Regeneration control failure.
Under usually running controls, the rotating speed N in motor 201 and the relation of torque T be positioned at output characteristics map M from regeneration zone, the waste gas of motor 201 reaches a high temperature more than the degree of PM amount of collected with the PM amount of oxidation in discharge filter 202.
In assisted Regeneration controls, the adjustment of the aperture of throttle component 228 and rear injection D is utilized to regenerate to make discharge filter 202.That is, in assisted Regeneration controls, by EGR valve component 231 valve closing, and make throttle component 228 valve closing (throttling) to specifying aperture, thus restriction is to the air inflow of motor 201.So the load of motor 201 increases, so in order to maintain setting speed, making the fuel injection amount of common-rail system 220 increase, making the exhaust gas temperature of motor 201 increase.Correspondingly, utilize the rear injection D that carry out spray more delayed slightly than main injection A to make diffusive combustion activate, make the exhaust gas temperature of motor 201 increase.As a result, the PM in discharge filter 202 is made to burn and remove.In addition, the Regeneration control illustrated afterwards any one in, EGR valve component 231 all valve closing.
(blocked state of discharge filter 202 does not improve to control kaput situation at assisted Regeneration, make the situation that PM has remained) under, the accumulation driving time TI of motor 201 is when reaching more than set time TI2 (such as 100 hours), carries out replacement Regeneration control.In replacement Regeneration control, except the form that assisted Regeneration controls, spray E after also carrying out time, thus discharge filter 202 is regenerated.Namely, in replacement Regeneration control, except utilizing the adjustment of the aperture of throttle component 228 and rear injection D, also in secondary rear injection E, unburned fuel is directly supplied in discharge filter 202, make unburned fuel in diesel oxidation catalyst 243 combustion, thus make the exhaust gas temperature in discharge filter 202 rise (about about 560 DEG C).As a result, the PM in discharge filter 202 is forcibly made to burn and remove.
Inferior in the replacement kaput situation of Regeneration control (blocked state of discharge filter 202 does not improve, and makes the situation that PM has remained), carry out non-operation Regeneration control.In non-operation Regeneration control, except resetting the form of Regeneration control, also the rotating speed N of motor 201 is being maintained in regulation high speed rotating speed (such as 2200rpm, also can be maximum speed or high speed idling speed), thus on the basis making the exhaust gas temperature of motor 201 increase, also in discharge filter 202, make exhaust gas temperature rise (about about 600 DEG C) by time rear E of injection.As a result, than under the better condition of replacement Regeneration control, the PM in discharge filter 202 is forcibly made to burn and remove.In addition, the throttle component 228 in non-operation Regeneration control is un-throttled also, but closes completely.Carry out the rear injection D in non-operation Regeneration control with postponing (delayed) than assisted Regeneration control, replacement Regeneration control.
In non-operation Regeneration control, maximum output (about 80% of such as maximum output) when the export-restriction of motor 201 being become non-operation lower than maximum output.In this case, due to the rotating speed N of motor 201 is maintained in regulation high speed rotating speed, therefore, the fuel injection amount of common-rail system 220 is regulated, maximum output during to suppress torque T to reach non-operation.
Inferior in the kaput situation of non-operation Regeneration control (blocked state of discharge filter 202 does not improve, and makes the situation of the excessive accumulation of PM), carry out recovery Regeneration control.The recovery Regeneration control of mode of execution is divided into recovery first Regeneration control and recovery these two stages of the second Regeneration control carry out.Recover the first Regeneration control may exist excessive accumulation PM runaway combustion situation under, make the PM in discharge filter 202 burn gradually and remove, discharge filter 202 regenerated lentamente.Under recovering the situation that the second Regeneration control disappears in the possibility of runaway combustion, make discharge filter 202 rapid regeneration.
Whole recovery Regeneration control carries out substantially in the same manner as the form of non-operation Regeneration control, but in recovery first Regeneration control, in order to prevent the runaway combustion of the PM of excessive accumulation, such as reduce time rear fuel injection amount etc. sprayed in E, exhaust gas temperature in discharge filter 202 to be carried out long-time (within such as 3 hours ~ 3.5 hours) for target with the temperature TP3 (such as about 500 DEG C) lower than non-operation Regeneration control, makes the PM in discharge filter 202 burn gradually and remove.In recovery first Regeneration control, maximum output when the export-restriction of motor 201 being become recovery lower than output maximum during non-operation (about 80% of such as maximum output).In this case, regulate the fuel injection amount of common-rail system 220, not only to suppress the torque T of motor 201, and maximum output when suppressing rotating speed N to reach recovery.
In recovery second Regeneration control, utilize the valve closing of throttle component 228, rear injection D, the secondary rear regulation high speed rotating speed spraying E and motor 201, make exhaust gas temperature in discharge filter 202 with the temperature TP4 (such as about 600 DEG C) higher than recovery first Regeneration control for target, discharge filter 202 is regenerated rapidly.That is, the form of the second Regeneration control and the homomorphosis of non-operation Regeneration control is recovered.Recover the first Regeneration control and the emitted dose of recovering to spray after the main difference of the second Regeneration control is time E, such as, when recovering the first Regeneration control time after spray E emitted dose than during recovery the second Regeneration control time after the emitted dose of injection E few.
Usual running controls, from needless to say, to control at assisted Regeneration and reset in Regeneration control, also the transmission of power of motor 201 can be performed various operation (can by motor 201 with the mode activated usually operated) to the working part of such as Work machine.In non-operation Regeneration control and recovery Regeneration control, the burning only in order to carry out PM is removed, and motor 201 is driven, does not utilize the power of motor 201 that the working part of such as Work machine is driven.
(5) form of discharge filter Regeneration control
Next, an example of the Regeneration control of the discharge filter 202 undertaken by ECU311 is described with reference to the flow chart that Figure 14 is later.Instruction based on ECU311 performs above-mentioned each Regeneration control.That is, be stored in the EEPROM of ECU311 with the algorithm that the flow chart that Figure 14 is later represents, this algorithm read into CPU process after in RAM, thus perform above-mentioned each Regeneration control.
As shown in figure 14, in the Regeneration control of discharge filter 202, first when key operation 331 connects (S101: yes), the aperture of the checkout value of engine rotation sensor 314, cooling water temperature sensor 319, differential pressure transducer 281 and dpf temperature sensor 282, throttle component 228 and EGR valve component 231 and the fuel injection amount (S102) of common-rail system 220 is read in.Then, when the accumulation driving time TI after perform assisted Regeneration control before, resetting Regeneration control or non-operation Regeneration control is less than set time TI1 (such as 50 hours) (S103: no), infer the PM accumulating amount (S104) in discharge filter 202.In step S104, that carries out mapping based on the checkout value of differential pressure transducer 281 and exhaust gas flow infers with the PM accumulating amount that P method is carried out, and based on the checkout value of engine rotation sensor 314, fuel injection amount, PM discharge capacity maps and exhaust gas flow maps the PM accumulating amount supposition undertaken by C method.When the PM accumulating amount undertaken by P method and C method is more than established amount Ma (such as 8g/l) (S105: yes), performs assisted Regeneration and control (S106).
When have passed through stipulated time TI3 (such as 30 minutes) from assisted Regeneration control (S107: yes), terminating assisted Regeneration and control and get back to the control that usually operates.If the beginning that distance assisted Regeneration controls at the appointed time (S107: no), then utilize the PM accumulating amount (S108) in C method supposition discharge filter 202.According to this point, in embodiments, in the implementation of each Regeneration control, substantially infer PM accumulating amount by C method, when in addition, infer PM accumulating amount by P method.According to whether being in the estimation method changing PM accumulating amount in the implementation of each Regeneration control.When the PM accumulating amount inferred by C method is less than established amount Ma (such as 6g/l) (S109: yes), terminates assisted Regeneration and control and get back to the control that usually operates.When the PM accumulating amount inferred by P method and C method is more than established amount Ma (S109: no), when have passed through stipulated time TI4 (such as 10 minutes) in this condition (S110: yes), to the replacement standby mode reset before Regeneration control and step S201 transfer.
Get back to step S103, when accumulation driving time TI is more than set time TI1 and is more than set time TI2 (such as 100 hours) further (S111: yes), to replacement standby mode and step S201 transfer.In this stage, regeneration lamp 328 glimmers, and urges operator to perform replacement Regeneration control.When regenerating disable switch 323 and disconnecting and make regenerative switch 322 be connected to stipulated time (such as 3 seconds), if the exhaust gas temperature TP in discharge filter 202 reaches more than TP1 (such as 250 DEG C) (S201: yes), then perform and reset Regeneration control (S202).In this stage, regeneration lamp 328 and exhaust temperature alert lamp 326 are all lighted.
When regenerate disable switch 323 connect or regenerative switch 322 disconnects or exhaust gas temperature TP in discharge filter 202 is less than TP1 (S201: no), the PM accumulating amount (S203) in discharge filter 202 is inferred by C method, when under the state being less than established amount Mr (such as 6g/l) at the PM accumulating amount inferred by C method when stipulated time TI5 (such as 1 hour) (S204: yes), depart from and reset standby mode and get back to the control that usually operates.When have passed through stipulated time TI6 (such as 3 hours) under the state being no in step S204 (S205: yes), worry that PM may excessive accumulation, so to the non-operation standby mode before non-operation Regeneration control and step S301 transfer.
In the implementation resetting Regeneration control, infer the PM accumulating amount (S206) in discharge filter 202 by P method and C method.When the PM accumulating amount inferred by P method and C method is all less than established amount Mr (such as 10g/l) (S207: no), and the exhaust gas temperature TP in discharge filter 202 be more than TP2 (such as 600 DEG C) state under have passed through stipulated time TI7 (such as 25 minutes) (S208: yes), or self reset Regeneration control start to have passed through stipulated time TI8 (such as 30 minutes) time (S209: yes), terminate to reset Regeneration control and get back to the control that usually operates.When the PM accumulating amount inferred by P method and C method is more than established amount Mr (S207: yes), be considered as resetting Regeneration control failure, worry that PM may excessive accumulation, so to the non-operation standby mode before non-operation Regeneration control and step S301 transfer.
As shown in figure 15, in non-operation standby mode, first infer the PM accumulating amount (S301) in discharge filter 202 by P method and C method.In this stage, motor warning light 325 and regeneration requirements lamp 327 are lighted, and advance notice operator performs non-operation Regeneration control.When being all less than established amount Mb (such as 12g/l) (S302: no) with the PM accumulating amount of P method and the supposition of C method and in stipulated time TI9 (such as 10 hours) (S303: no), standby until the non-operation jump condition preset sets up (S304).When the PM accumulating amount inferred by P method and C method is more than established amount Mb (S302: yes) or have passed through stipulated time TI9 (such as 10 hours) under the state keeping non-operation standby mode (S303: yes), worry the excessive accumulation of PM possibility, so to the recovery standby mode recovered before Regeneration control and step S401 transfer.In addition, in non-operation standby mode, if PM accumulating amount is such as less than 10g/l, then alarm buzzer 330 rings dynamic intermittently, if PM accumulating amount is such as more than 10g/l, then alarm buzzer 330 rings dynamic continuously.Operator can move according to the ring of alarm buzzer 330 chocking-up degree that state probably holds discharge filter 202.
Non-operation jump condition shown in step S304 is in relieving state (disconnection) by interlock switch 324, makes regenerative switch 322 connect the stipulated time (such as 3 seconds), regenerate the checkout value that disable switch 323 disconnects, motor 201 is low speed idle rotating speed (MIN rotating speed time zero load) and cooling water temperature sensor 319 is that these five conditions of more than specified value (such as 65 DEG C) are formed.In this case, when the checkout value of cooling water temperature sensor 319 reaches more than specified value, the warm-operation of motor 201 has been considered as.
In step s 304, when the checkout value that interlock switch 324 is in relieving state (disconnection), motor 201 is low speed idle rotating speed and cooling water temperature sensor 319 is this three conditions establishments of more than specified value, the state that maintenance makes motor warning light 325 and regeneration requirements lamp 327 continue to light unchangeably, regeneration lamp 328 is glimmered, urges operator to perform non-operation Regeneration control.Further, when regenerating disable switch 323 and disconnect and making regenerative switch 322 be connected to the stipulated time (S304: yes), five non-operation jump conditions are set up, and perform non-operation Regeneration control (S305).In this stage, motor warning light 325 and regeneration requirements lamp 327 are extinguished, regeneration lamp 328 and exhaust temperature alert lamp 326 are all lighted.
In the process performing non-operation Regeneration control, infer the PM accumulating amount (S306) in discharge filter 202 by C method.When the PM accumulating amount inferred by C method is less than established amount Ms (such as 8g/l) (S307: yes), and the exhaust gas temperature TP in discharge filter 202 be more than TP2 (such as 600 DEG C) and have passed through stipulated time TI10 (such as 25 minutes) (S308: yes) or apart from non-operation Regeneration control start to have passed through stipulated time TI11 (such as 30 minutes) time (S309: yes), terminate non-operation Regeneration control and get back to the control that usually operates.When the PM accumulating amount inferred by C method is more than established amount Ms (S307: yes), if in this condition when stipulated time TI12 (such as 30 minutes) (S310: yes), then regard as the failure of non-operation Regeneration control, worry the excessive accumulation of PM possibility, so to the recovery standby mode recovered before Regeneration control and step S401 transfer.
In the process performing non-operation Regeneration control, when interlock switch 324 becomes connection for lock state (connection) or regeneration disable switch 323 (S311: yes), interrupt non-operation Regeneration control.In this stage, motor warning light 325 and regeneration requirements lamp 327 are lighted, regeneration lamp 328 is neglected and brightly suddenly to go out.When making regeneration disable switch 323 connect, regeneration forbids that lamp 329 is also lighted.In addition, when having interrupted non-operation Regeneration control, if connect regenerative switch 322, then again start non-operation Regeneration control.
As shown in figure 16, under recovery standby mode, the standby recovery jump condition to presetting sets up (S401).In this stage, same with non-operation standby mode, motor warning light 325 and regeneration requirements lamp 327 are lighted, and advance notice operator performs recovery Regeneration control.Recovery jump condition shown in step S401 is substantially identical with non-operation jump condition, but the time of pressing of regenerative switch 322 is longer than the situation of non-operation jump condition.That is, recover that jump condition is in relieving state (disconnection) by interlock switch 324, makes regenerative switch 322 connect the stipulated time (such as 10 seconds), regeneration disable switch 323 is disconnected, the checkout value that makes motor 201 be low speed idle rotating speed (MIN rotating speed time zero load) and cooling water temperature sensor 319 is that these five conditions of more than specified value (such as 65 DEG C) are formed.In this case also, when the checkout value of cooling water temperature sensor 319 reaches more than specified value, the warm-operation completing motor 201 is regarded as.
In step S401, when the checkout value that interlock switch 324 is in relieving state (disconnection), motor 201 is low speed idle rotating speed and cooling water temperature sensor 319 is this three conditions establishments of more than specified value, keep the state making motor warning light 325 and regeneration requirements lamp 327 continue to light to make regeneration lamp 328 glimmer unchangeably, urge operator to perform replacement Regeneration control.Further, when regenerating disable switch 323 and disconnect and making regenerative switch 322 be connected to the stipulated time (S401: yes), five are recovered jump conditions and set up, perform recovery first Regeneration control (S402).In this stage, motor warning light 325 and regeneration requirements lamp 327 are extinguished, regeneration lamp 328 and exhaust temperature alert lamp 326 are all lighted.
In the process performing recovery first Regeneration control, the PM accumulating amount (S404) in discharge filter 202 is inferred by C method, when the PM accumulating amount inferred by C method is less than established amount Mc (such as about 8g/l ~ 10g/l) (S405: yes), transfer to recovery second Regeneration control (S407).In the process performing recovery first Regeneration control, when interlock switch 324 is in the lock state (S406: yes) when (connections) or regeneration disable switch 323 become connection, interruption recovery first Regeneration control.In this stage, motor warning light 325 and regeneration requirements lamp 327 are lighted, regeneration lamp 328 is glimmered.When making regeneration disable switch 323 connect, lamp 329 is lighted also to make regeneration forbid.In addition, when having interrupted recovering the first Regeneration control, if make regenerative switch 322 connect, then again started to recover the first Regeneration control.When the PM accumulating amount inferred by C method is not reduced to less than established amount Mc (S405: no), and apart from recover the first Regeneration control start to have passed through stipulated time TI13 (such as 3 hours ~ 3.5 hours) time (S403: yes), even if be judged as proceeding further to recover Regeneration control, also be difficult to discharge filter 202 be regenerated, so return.Give the alarm in this condition, make engine stop.
In recovery second Regeneration control, when apart from recover the second Regeneration control start to have passed through stipulated time TI14 (such as 30 minutes) time (S408: yes), terminate recovery second Regeneration control and get back to the control that usually operates.In the process performing recovery second Regeneration control, when interlock switch 324 is in the lock state (S409: yes) when (connections) or regeneration disable switch 323 become connection, interruption recovery second Regeneration control.In this stage, also make motor warning light 325 and regeneration requirements lamp 327 light, regeneration lamp 328 is glimmered.When making regeneration disable switch 323 connect, lamp 329 is lighted also to make regeneration forbid.In addition, when having interrupted recovering the second Regeneration control, if make regenerative switch 322 connect, then again started to recover the second Regeneration control.
So, in the Regeneration control of the discharge filter 202 of mode of execution, when perform reset Regeneration control or non-operation Regeneration control after have passed through set time TI1 (such as 50 hours) time, setting can not allow pattern via what perform non-operation Regeneration control with resetting Regeneration control.In the step S111 of Figure 14, when accumulation driving time TI be more than set time TI1 and below TI2 time (S111: no), transfer to step S501 (with reference to Figure 17).In step S501, if performing is over reset Regeneration control or non-operation Regeneration control (S501: yes) before, regeneration requirements lamp 327 is then made to light, and make regeneration lamp 328 glimmer, notice can perform does not allow pattern via what reset that Regeneration control just can carry out non-operation Regeneration control.Different from during non-operation standby mode, motor warning light 325 is not lighted.And, when interlock switch 324 is in relieving state (disconnection), when regeneration disable switch 323 disconnects and makes regenerative switch 322 be connected to stipulated time (such as 10 seconds) (S502: yes), then become the holding state (S503) of allowing pattern.
In step S503, when interlock switch 324 be in relieving state (disconnection), make regenerative switch 322 connect the stipulated time (such as 3 seconds), make regeneration disable switch 323 disconnects, motor 201 is low speed idle rotating speed (MIN rotating speed time zero load) and cooling water temperature sensor 319 checkout value be these five conditions of more than specified value (such as 65 DEG C) set up time (S503: yes), perform the non-operation Regeneration control (S504) of allowing under pattern.In this stage, regeneration requirements lamp 327 is extinguished, regeneration lamp 328 and exhaust temperature alert lamp 326 are all lighted.
Allow that the form of the non-operation Regeneration control (S504 ~ S510) under pattern is with substantially identical via the non-operation Regeneration control (S305 ~ S311) when resetting Regeneration control.In following too: when the PM accumulating amount inferred by C method is more than established amount Ms (S506: yes), if in this condition through stipulated time TI17 (such as 30 minutes) (S509: yes), then regard as and allow that the non-operation Regeneration control under pattern is failed, worry the excessive accumulation of PM possibility, so to the recovery standby mode recovered before Regeneration control and step S401 transfer.When adopting this control, operator performs non-operation Regeneration control wittingly, the PM in discharge filter 202 can be made to burn and remove, improve the maintainability of discharge filter 202.
(6) sum up
According to above-mentioned explanation and Figure 10, Figure 15 and Figure 16 can clearly learn, the waste gas cleaning plant 202 that waste gas cleaning system comprises common rail engine 201 and is configured in the exhaust pathway of above-mentioned motor 201, can perform and the particulate material be deposited in above-mentioned waste gas cleaning plant 202 be burnt and multiple Regeneration controls of removal, as above-mentioned multiple Regeneration control, at least there is the non-operation Regeneration control making exhaust gas temperature increase secondary rear injection E and regulation high speed speed combination, with the recovery Regeneration control that can perform when above-mentioned non-operation Regeneration control is failed, be set in above-mentioned non-operation Regeneration control and above-mentioned recovery Regeneration control, burning only in order to carry out above-mentioned particulate material is removed and above-mentioned motor 201 is driven, in above-mentioned recovery Regeneration control, impose the exhaust gas temperature lower than above-mentioned non-operation Regeneration control and the time longer than above-mentioned non-operation Regeneration control, even if so above-mentioned particulate material is excessively piled up in above-mentioned waste gas cleaning plant 202, above-mentioned particulate material is made while runaway combustion also can not occur to burn and remove.Thus, the breakage (melting loss) of above-mentioned waste gas cleaning plant 202, excessive pollution discharge can be prevented.
In addition, in the kaput situation of above-mentioned non-operation Regeneration control, transfer to the recovery standby mode of the establishment waiting for the recovery jump condition (S401 with reference to Figure 16) preset, when above-mentioned recovery jump condition is false, except carry out with above-mentioned recovery standby mode standby except, also in the process performing above-mentioned recovery Regeneration control, at the recovery condition subsequent preset (with reference to the S406 of Figure 16, S409) after setting up, interrupt above-mentioned recovery Regeneration control, so after temporarily transferring to above-mentioned recovery standby mode, only transfer to above-mentioned recovery Regeneration control or above-mentioned recovery standby mode subsequently.Therefore, the such Regeneration control causing runaway combustion can not be performed, the generation of runaway combustion can be prevented.
In addition, owing to turning back to when completing above-mentioned recovery Regeneration control the control that usually operates, thus operator need not carry out that such as pattern switches return operation etc., can trouble be saved, alleviate the operation burden of operator.
Can clearly learn according to above-mentioned explanation and Figure 10 and Figure 14 ~ Figure 16, the waste gas cleaning plant 202 that waste gas cleaning system comprises common rail engine 201 and is configured in the exhaust pathway of above-mentioned motor 201, can perform and the particulate material be deposited in above-mentioned waste gas cleaning plant be burnt and multiple Regeneration controls of removal, as above-mentioned multiple Regeneration control, at least have and use time rear replacement Regeneration control spraying E and make exhaust gas temperature increase, the non-operation Regeneration control making exhaust gas temperature increase secondary rear injection E and regulation high speed speed combination, and the recovery Regeneration control that can perform when above-mentioned non-operation Regeneration control failure, in above-mentioned non-operation Regeneration control and above-mentioned recovery Regeneration control, burning only in order to carry out above-mentioned particulate material is removed and makes above-mentioned engine-driving, so in above-mentioned non-operation Regeneration control and above-mentioned recovery Regeneration control, above-mentioned motor 201 does not operate usually.That is, above-mentioned non-operation Regeneration control and above-mentioned recovery Regeneration control as preventing the breakage (melting loss) of above-mentioned waste gas cleaning plant 202, excessive pollution discharges pattern that such crisis avoids and exists.
And, be set to from above-mentioned replacement Regeneration control and transfer to above-mentioned recovery Regeneration control through above-mentioned non-operation Regeneration control, when transferring to above-mentioned non-operation Regeneration control from above-mentioned replacement Regeneration control, via waiting for the non-operation standby mode that the non-operation jump condition (S304 with reference to Figure 15) preset is set up, when transferring to above-mentioned recovery Regeneration control from above-mentioned non-operation Regeneration control, via waiting for the recovery standby mode that the recovery jump condition (S401 with reference to Figure 16) preset is set up, when above-mentioned each jump condition is false, carry out standby with above-mentioned each standby mode, so after temporarily transferring to above-mentioned each standby mode, only transfer to above-mentioned non-operation Regeneration control or above-mentioned recovery Regeneration control.Therefore, can not perform and cause such Regeneration control of runaway combustion, the generation of runaway combustion can be prevented, reliably carry out preventing the breakage (melting loss) of above-mentioned waste gas cleaning plant 202, excessive pollution discharges such crisis and avoid.
In addition, in above-mentioned non-operation Regeneration control, maximum output when the export-restriction of above-mentioned motor 201 being become non-operation lower than maximum output, in above-mentioned recovery Regeneration control, maximum output when the export-restriction of above-mentioned motor 201 being become recovery lower than output maximum during above-mentioned non-operation, so performing above-mentioned non-operation Regeneration control, when above-mentioned recovery Regeneration control, excessive intensification and the boosting of waste gas can be prevented, suppress by the deterioration of the exhaust system part of above-mentioned waste gas cleaning plant 202 grade caused that heats up, the generation of the waste gas leakage at the joining portion from above-mentioned exhaust system part of being caused by boosting.
(7) other
The present invention is not limited to above-mentioned mode of execution, can be embodied in various form.Such as in the waste gas cleaning system of mode of execution, there is regenerative switch 322 and regeneration both disable switches 323, but the present invention is not limited to this, omits regeneration disable switch 323 and regenerative switch 322 is only set, also can perform the control identical with above-mentioned mode of execution.
In addition, omit regenerative switch 322 and regeneration disable switch 323 is only set, also can perform the control identical with above-mentioned mode of execution.In this case, regenerating disable switch 323 is that the switch of alternating movement type is better.And, as shown in step S304, the step S401 of Figure 20 of the step S201 of the Figure 18 as another example, Figure 19, the step S502 of Figure 21 and step S503, even if the connection of regenerative switch 322 disconnects deviate from distinguish benchmark, also can distinguish that the execution resetting the later each Regeneration control of Regeneration control could.In addition, the structure of each several part is not limited to illustrated mode of execution, can carry out various change without departing from the spirit and scope of the invention.
Description of reference numerals
201, motor; 202, discharge filter; 220, common-rail system; 228, throttle component; 231, EGR valve component; 240, housing is purified; 243, diesel oxidation catalyst; 244, soot filter; 281, differential pressure transducer; 282, dpf temperature sensor; 311, ECU; 322, regenerative switch; 323, disable switch is regenerated; 324, interlock switch; 325, motor warning light; 326, exhaust temperature alert lamp; 327, regeneration requirements lamp; 328, lamp is regenerated; 329, lamp is forbidden in regeneration.

Claims (7)

1. a waste gas cleaning system, this waste gas cleaning system comprises common rail engine and is configured in the waste gas cleaning plant in the exhaust pathway of described motor, the multiple Regeneration controls particulate material burning be deposited in described waste gas cleaning plant removed can be performed, it is characterized in that
As described multiple Regeneration control, at least there is the non-operation Regeneration control making exhaust gas temperature increase rear injection and regulation high speed speed combination and the recovery Regeneration control that can perform when described non-operation Regeneration control failure,
Be set to: in described non-operation Regeneration control and described recovery Regeneration control, the burning only in order to carry out described particulate material is removed and makes described engine-driving; In described recovery Regeneration control, impose the exhaust gas temperature lower than described non-operation Regeneration control and the time longer than described non-operation Regeneration control.
2. waste gas cleaning system according to claim 1, is characterized in that,
In the kaput situation of described non-operation Regeneration control, transfer to the recovery standby mode of the establishment waiting for the recovery jump condition preset, when described recovery jump condition is false, carry out standby with described recovery standby mode.
3. waste gas cleaning system according to claim 2, is characterized in that,
In the process performing described recovery Regeneration control, when the recovery condition subsequent preset is set up, interrupt described recovery Regeneration control.
4., according to the waste gas cleaning system in claims 1 to 3 described in any one, it is characterized in that,
When completing described recovery Regeneration control, get back to the control that usually operates.
5. waste gas cleaning system according to claim 1, is characterized in that,
As described multiple Regeneration control, at least there is the recovery Regeneration control using and spray the replacement Regeneration control making exhaust gas temperature increase, the non-operation Regeneration control making exhaust gas temperature increase rear injection and regulation high speed speed combination afterwards and can perform when described non-operation Regeneration control failure
In described non-operation Regeneration control and described recovery Regeneration control, the burning only in order to carry out described particulate material is removed and makes described engine-driving,
Be set to from described replacement Regeneration control and transfer to described recovery Regeneration control via described non-operation Regeneration control, when from described replacement Regeneration control to described non-operation Regeneration control transfer, the non-operation standby mode of the establishment of the non-operation jump condition preset via wait, when from described non-operation Regeneration control to described recovery Regeneration control transfer, the recovery standby mode of the establishment of the recovery jump condition preset via wait, when described each jump condition is false, carry out standby with described each standby mode.
6. waste gas cleaning system according to claim 5, is characterized in that,
In described non-operation Regeneration control, maximum output when the export-restriction of described motor being become non-operation lower than maximum output.
7. the waste gas cleaning system according to claim 5 or 6, is characterized in that,
In described recovery Regeneration control, maximum output when the export-restriction of described motor being become recovery lower than output maximum during described non-operation.
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